並聯式氣動燃油複合動力系統之最佳化能量管理

氣動引擎因能量密度偏低，大都以複合內燃機引擎的方式來改善續航力及輸出特性，氣動引擎可利用內燃機引擎的廢熱來提高輸出特性，以及高壓氣體亦可對內燃機作類似渦輪增壓模式來提高輸出功率，氣瓶又沒有像是電池電量為確保使用壽命而有的限制，氣動複合內燃機引擎有其價值所在，目前電動複合內燃機雙動力系統的能量管理已相當成熟，但鮮少有關於氣動複合內燃機引擎能量管理的研究，所以本文藉由架設氣動引擎與內燃機引擎複合動力系統之數值模型與實驗，對其特點進行探討，以擬出能量管理策略，兩動力源輸出比重不分主輔，能適當地取決於使用需求，使彼此在複合後仍能保留彼此的優勢，為控制器的設計與實體系統架設奠定基礎。在駕駛情境上作行車模擬，輔以基因演算法作整體效率最高點之搜索，最佳化設計系統架構、操作模式及能量管理策略，使兩顆引擎盡量操作在高效率區間內。從結果中可看到，最佳化複合後的動力系統能量使用效率的確可以比單一使用內燃機或純氣動引擎來得高。

關鍵字

基因演算法；氣動引擎；複合系統；能量管理策略；最佳化；數值模擬

並列摘要

Air Engines (AE) are commonly designed to work in combination with internal combustion engines (ICE) due to low energy density. The emission of heat from ICE boosts the efficiency of Air Engines, whereas the high-pressure gas from AE serves as a form of turbo charging for ICE, increasing its efficiency. Unlike batteries, the air tank that AE requires is not limited by certain restrictions in order to prolong its lifetime, therefore, the Air Hybrid System is believed to have great potential. There has already been quite some research on power management strategy of electric hybrid systems, however, little is done on Air hybrid systems. A numerical models of Air Hybrid Systems is established using MATLAB in this study, the characteristics of the model, such as the efficiency map and driving cycles are further analyzed to obtain the optimal energy management strategy for Air Hybrid Systems. These findings are expected to help the realization of physical models and the establishment of controller design. Through genetic algorithms, the optimal system structures, operation modes and power management strategies are found to ensure that both engines are operating within the most efficient range. Simulation results suggest that the efficiency of the Air Hybrid System is higher comparing to a lone air engine or internal combustion engine.

並列關鍵字

Genetic algorithm ； Air Engine ； Hybrid System ； Power Management Strategy ； Optimization ； Numerical Simulation

參考文獻

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[30] 彭國倫, "氣動引擎與內燃機引擎複合系統之架設與研究," 碩士論文, 動力機械工程研究所, 國立清華大學, 2015.

[36] 胡政綱, "活塞式氣體動力引擎分析與效能提升," 碩士論文, 動力機械研究所, 國立清華大學, 2012.

[3] International Energy Agency. Available: http://www.iea.org/bookshop/669-CO2_Emissions_from_Fuel_Combustion

[5] M. O. Tokhi, M. Al-Miskiry, and M. Brisland, "Real time control of air motors using a pneumatic H-bridge," Control Engineering Practice 9, pp. 449-457, 2001.

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並聯式氣動燃油複合動力系統之最佳化能量管理

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